南京某高校学生宿舍空气污染物浓度及室内外差异特征研究  

Characteristics of Indoor Air Pollutant Concentrations and Indoor-Outdoor Differences at a University Dormitory in Nanjing

作　　者：张添桢 陈培林 王勤耕[1,2] ZHANC Tian-zhen;CHEN Pei-lin;WANG Qinmgeng(State Key Laboratory of Pollution Control and Resources Reuse,School of the Environment,Nanjing University,Nanjing 210023,China;Collaborative Innovation Center of Atmospheric Environment and Equipment Technology,Nanjing 210044,China)

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,江苏南京210023 [2]江苏省大气环境与装备技术协同创新中心,江苏南京210044

出　　处：《环境科技》2024年第3期64-69,75,共7页Environmental Science and Technology

基　　金：国家自然科学基金(42307132)。

摘　　要：以南京某高校典型大学生宿舍为研究对象,通过对宿舍内外4种主要污染物(CH_(2)O,O_(3),PM_(2.5)和PM_(10))在不同季节和通风情景下的同步监测,评估室内空气质量状况并分析不同污染物时间变化特征和室内外差异及两者影响因素。结果显示,CH_(2)O浓度明显超标,最大小时浓度超标1.6倍。夏季CH_(2)O和O_(3)的浓度明显高于冬季,PM_(10)和PM_(2.5)浓度差异则相反。室内CH_(2)O浓度显著高于室外,O_(3)浓度低于室外,表明CH_(2)O主要由室内产生,O_(3)主要来源室外。室内外颗粒物浓度相差较小,同时受到室内外来源影响。开窗通风可显著降低室内CH_(2)O浓度,但可能导致O_(3)浓度升高,对颗粒物的影响则与室内外来源相对强弱有关。This study took typical dormitories of a university in Nanjing as the research object.Basing on the synchronous monitoring of four widely concerned pollutants(CH_(2)O,O_(3),PM_(2.5) and PM_(10))inside and outside the dormitories in different seasons and ventilation scenarios,the indoor air quality was assessed,and differences between the indoor and outdoor and influencing factors were discussed.The results showed that the hourly concentration of CH_(2)O exceeded the standard significantly,by 1.6 times for the maximum value.The concentrations of CH_(2)0 and O,were remarkably higher in summer than in winter,while it was opposite for PM_(10) and PM_(2.5).The concentrations of indoor CH_(2)O and O,were significantly higher and lower than that of outdoor,indicating CH_(2)O is mainly originated from indoor sources,while O,is from outdoor.The differences of PM_(2.5) and PM_(10) concentrations between indoor and outdoor were relatively small,indicating they were affected by both indoor and outdoor sources.Window ventilation can significantly reduce indoor CHO concentration,but may lead to an increase in O_(3),and the effect on particulate matters is associated with the relative strength of indoor and outdoor sources.

关 键 词：室内空气污染 甲醛 臭氧 颗粒物 

分 类 号：X8[环境科学与工程—环境工程]